Crypto & DeFi

Crypto Wallet Custody Where and how cryptocurrency private keys are stored, determining ownership and exposure to counterparty risk.

Crypto Wallet Tax Tax treatment of gains and losses from cryptocurrency holdings in digital wallets, including reporting requirements and timing of taxable events.

Crypto Warrant Token A warrant token grants the right to purchase a project's future tokens at a predetermined price, mirroring traditional equity warrants on-chain.

Crypto Wash Sale Rules Whether wash-sale restrictions—which prohibit repurchasing a security within 30 days of a loss—apply to cryptocurrency, an area of unresolved tax treatment.

Crypto Wash-Sale Rule Explained Crypto wash sale rule: why the IRS currently does not apply wash-sale rules to cryptocurrency and what it means for tax-loss harvesting.

Crypto Withdrawal Fees vs Trading Fees Learn the crypto withdrawal fee vs trading fee difference: how exchanges charge on each side of a transaction and when each cost dominates your total expense.

Cryptocurrency Exchange A cryptocurrency exchange is a platform where users can buy, sell, and trade cryptocurrencies. Exchanges can be centralised (operated by a company) or decentralised (peer-to-peer with smart contracts).

Curve Wars Competition among projects for liquidity incentives and voting control on Curve Finance's stablecoin decentralized exchange.

Custodial vs Non-Custodial Wallet Custodial vs non-custodial wallet: who holds the private keys, trade-offs between convenience and self-custody, and security implications.

Custody Risk in Wrapped Tokens Wrapped token custody risk arises from the centralized custodian who mints and backs each wrapped token with the underlying asset.

Danksharding Ethereum's full sharding design that separates data availability from execution, using proposer-builder separation and attester sampling.

DAO Governance Tokens: Tax Implications How receiving, holding, and voting with DAO governance tokens creates taxable income and capital gain events under current IRS rules.

Data Availability Committee Explained A data availability committee is a small group of signers that attests off-chain transaction data is retrievable, reducing the security guarantees of on-chain verification.

Data Availability Layer A blockchain layer where transaction data is published separately from execution, enabling modular rollups and reducing throughput bottlenecks.

Data Availability Sampling Explained Data availability sampling explained: how light nodes verify block data is available without full download, enabling blockchain scaling.

Decentralised Exchange A decentralised exchange (DEX) is a peer-to-peer platform where users trade cryptocurrencies directly from their own wallets using smart contracts. DEXs eliminate custodial risk but may have lower liquidity than centralised exchanges.

Decentralized Autonomous Organization Token-governed entities where on-chain voting replaces traditional corporate hierarchy and central decision-making.

Decentralized Exchange Mechanics Peer-to-peer trading systems using automated market makers and liquidity pools to enable cryptocurrency trading without a central counterparty.

DeFi Collateral Types Compared Comparing volatile crypto, liquid staking tokens, and stablecoins as collateral in lending protocols—risk, efficiency, and usage patterns.

DeFi Composability How DeFi protocols interconnect and stack as 'money legos' to build complex financial strategies.

DeFi Fee Tier Selection for Liquidity Providers How liquidity providers choose between low, medium, and high fee tiers based on volatility, trading volume, and capital efficiency in DeFi.

DeFi Gas Fee Optimization: How to Reduce Transaction Costs Practical strategies to reduce gas fees in DeFi, including timing, layer-2 solutions, and batching techniques for cheaper on-chain transactions.

DeFi Governance On-chain systems for voting and upgrading decentralized finance protocols using token holders as decision-makers.

DeFi Insurance Decentralized cover protocols that let users hedge smart-contract exploit risk and collateral depeg losses in DeFi.

DeFi Lending Interest Rate Models DeFi lending interest rate models automatically adjust borrow and supply APY as pool utilization rises and falls, balancing supply and demand.

DeFi Lending Utilization Rate Explained How a DeFi lending pool's utilization rate—the share of deposits currently borrowed—determines both borrow APR and supply APR in money-market protocols.

DeFi Liquidation Penalty Explained When a DeFi loan gets liquidated, borrowers lose collateral. See what percentage gets seized and why protocols choose different penalties.

DeFi Liquidation: How It Works DeFi liquidation occurs when a borrower's collateral value falls below the protocol's required threshold, triggering automatic sale of collateral to repay the loan.

DeFi Looping: How Recursive Borrowing Creates Leverage DeFi looping leverage explained: how depositing collateral, borrowing, and redepositing amplifies yield and exposure—and the liquidation cascade that ends loops.

DeFi Oracle Decentralized price feeds that supply off-chain data to smart contracts while resisting manipulation and ensuring reliability.

DeFi Points Systems Explained How DeFi points systems work as pre-launch rewards and the risks of farming points as a proxy for future token airdrops.

DeFi Protocol Revenue Sharing with Token Holders How DeFi protocols distribute revenue from trading fees and interest to governance token holders who stake or lock their assets.

DeFi Revenue Model How decentralized finance protocols generate sustainable income through trading fees, borrowing spreads, and governance-controlled fee switches.

DeFi Tax Considerations for Self-Employed Users Self-employed users earning DeFi yield must track cost basis, classify income as ordinary or capital gains, and handle self-employment tax on profits.

DeFi Tax Implications Tax reporting requirements for decentralized finance transactions including yields, swaps, and liquidations.

DeFi Vault Strategy Explained DeFi vault strategy explained: automated yield farming through smart contracts, how auto-compounding works, fee structures, and risks from protocol interactions.

DeFi Yield Farming Risks Yield farming risks include smart contract exploits, rug pulls, liquidation from price drops, and impermanent loss in liquidity pools.

DeFi Yield Harvesting as a Tax Event When claiming or auto-compounding DeFi yield triggers taxable income, how the reward is classified, and how to establish cost basis on harvested tokens.

Delegated Proof-of-Stake Delegated proof-of-stake is a consensus mechanism where token holders vote for a small number of delegates who validate blocks. This reduces the number of validators while allowing all token holders to participate in governance.

Delta-Neutral Strategy in DeFi Learn how DeFi traders build delta-neutral positions to earn yield while hedging directional price exposure.

Derivatives Exchange (Crypto) Crypto exchanges offering perpetual contracts, futures, and other derivatives rather than spot trading of digital assets.

Difficulty Adjustment Difficulty adjustment is a mechanism that automatically regulates the difficulty of the proof-of-work puzzle to maintain consistent block times. When hash rate increases, difficulty increases; when hash rate decreases, difficulty decreases.

Difficulty Adjustment Algorithm A protocol mechanism that automatically adjusts mining difficulty to maintain consistent block times as network hash rate changes.

Dilution (Cryptocurrency) The reduction in ownership percentage and per-token value when new tokens are issued and added to total supply.

Distributed Ledger A distributed ledger is a database maintained across many independent computers, each holding a copy of the same data. No single entity controls it, and consensus mechanisms ensure agreement on state.

Dogecoin Dogecoin is a peer-to-peer cryptocurrency created in 2013 as a parody of Bitcoin, featuring a Shiba Inu dog as its mascot. Despite its humorous origins, it remains actively maintained and traded.

Dollar-Cost Averaging in Crypto Dollar-cost averaging in crypto means investing a fixed amount at regular intervals, reducing timing risk in volatile markets and creating separate tax lots with unique cost bases.

Dual-Token Model in Crypto Projects Why some protocols issue two tokens—one for governance or staking, one for utility or fees—and the economic trade-offs of splitting functions this way.

Dynamic NFT Non-fungible tokens whose metadata or visual appearance changes on-chain based on external data or protocol conditions.

Eclipse Attack on Blockchain Nodes An eclipse attack monopolises a blockchain node's peer connections to deliver false chain data, enabling double-spends or wasted mining effort.

Enshrined Rollups on Ethereum An enshrined rollup bakes rollup logic directly into Ethereum's consensus layer, giving it protocol-level guarantees instead of relying on permissionless deployment.

Enshrined Validity Proofs on Ethereum Enshrined validity proofs would allow Ethereum's consensus layer to natively verify ZK proofs, enabling rollups without custom verifiers. The trade-off: increased protocol complexity and security surface.

Epoch-Based Consensus: How Epochs Structure Validator Duties How epochs work in proof of stake systems, organizing validator committees, rotation schedules, and reward distribution.

Estimated Quarterly Tax Payments for Crypto Traders How crypto traders avoid underpayment penalties using estimated quarterly tax payments and safe-harbor rules based on prior-year tax liability.

Ethereum Ethereum is a decentralised computing platform and cryptocurrency that enables smart contracts and decentralised applications. It is the second-largest cryptocurrency by market capitalisation and transitioned to proof-of-stake in 2022.

Ethereum Account Model vs UTXO Ethereum uses an account-based ledger model, while Bitcoin uses UTXO; the difference shapes smart-contract flexibility, privacy trade-offs, and how transactions are structured.

Ethereum Blob Fee Market EIP-4844 introduced blobs, a separate fee market for rollup data on Ethereum that expires after ~18 days, allowing cheaper transaction scaling than storing data on-chain permanently.

Ethereum Blob Transactions Explained What are Ethereum blob transactions? Learn how EIP-4844 reduces rollup data costs by storing calldata in a temporary, cheaper fee market.

Ethereum Dencun Ethereum Dencun was an upgrade in March 2024 that introduced blobs for cheaper data availability. It dramatically reduced layer-2 transaction costs by allowing layer-2 solutions to post data to Ethereum more cheaply.

Ethereum Gas Limit and Its Role in Scaling Ethereum gas limit how it affects scaling: what the block gas limit is, who controls it, and why simply raising it does not solve throughput.